From patchwork Thu Aug 3 17:59:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sunil V L X-Patchwork-Id: 13340451 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D74D4C04FE1 for ; Thu, 3 Aug 2023 18:03:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232575AbjHCSDR (ORCPT ); Thu, 3 Aug 2023 14:03:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235065AbjHCSCU (ORCPT ); Thu, 3 Aug 2023 14:02:20 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B884468B for ; Thu, 3 Aug 2023 11:01:30 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-68783004143so891519b3a.2 for ; Thu, 03 Aug 2023 11:01:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1691085686; x=1691690486; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9aQz/o5NvlReZUl/stpeRs4o5FY0c8qnUYDCfHqNmJI=; b=Yv3oRH7T1TZNQw/AeEOc/wdAwvfBHh5qCQDTqqhRRIWLN2RT7duj6j3Mlz5B+tyUjx DwzXxTjoAWH+iw6CkKfwMxF9xCniQjo3B09L5BaQ+m3yDEsvvlfRGxAUpVXc7dZmfqkz PN5+8DYtk9mthHfXcWzvd40WNmLxpaQLT+X3GYJHhIU0xy+P4PfNU1GlwdTTN0c2vXWS N5M/tFDrDNAY9aGtxjAy1r+U43wKUASBkf3zWtuZ0PK/OlWurnWRvhkcieTUH/K57kZ9 QHExlMok+1N1kt3iHzoySeHMoWERDl2+R1ayM9E29ohmdQ7YVT4UT939xn3e7d7QWGc0 3iwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691085686; x=1691690486; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9aQz/o5NvlReZUl/stpeRs4o5FY0c8qnUYDCfHqNmJI=; b=mIEUTrGMpYmkceZcPz+ReDNf5wznKvFhfCQyf2RPOz0CmY5myNhfC/JwjVisB1zX8V wsLpDi+Wi6Bsow9LFngl++6/Z2+wIlnPpvX2x7CDSRNOKNLYbqiC9Es6ZQBKPF4rHX3v NK6ZnmPePBoT+OS0BfkPTYDXf/J6q1eBrTvD2h8eTp5KViHVPo6ITHyFWAencyvdsEYi 1GH2XDBQHRw0y4rn7GXmNKLoCItS/niPBrOpi6gBBsSXtKBPLeti02wrc/UjtbfpgXPx SAKpZPRJa6iR8/sQXKh5MBaSvfBWMWCkesl7UaiN3qCkVUiU3jMpBdJ2xSIembk/Y+xz w4Zw== X-Gm-Message-State: ABy/qLZNzUo2T/wDu0SjElk9pjRaScO30mkpIIeFicvZLZX3THWBFwj3 /Hc3b67Zk+je/Vrh8Xxk3z9MoQ== X-Google-Smtp-Source: APBJJlGAchtJBdt5IHqdaCzjHt1kkOK9wPe4WveHGvpGtfcTQHQdjS3NSncu/qTOIgVracHNUgSdbg== X-Received: by 2002:a05:6a20:3d91:b0:132:c07c:f042 with SMTP id s17-20020a056a203d9100b00132c07cf042mr22166693pzi.15.1691085686344; Thu, 03 Aug 2023 11:01:26 -0700 (PDT) Received: from sunil-pc.Dlink ([106.51.190.143]) by smtp.gmail.com with ESMTPSA id s8-20020aa78d48000000b0065a1b05193asm134952pfe.185.2023.08.03.11.01.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Aug 2023 11:01:26 -0700 (PDT) From: Sunil V L To: linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org Cc: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Catalin Marinas , Will Deacon , "Rafael J . Wysocki" , Len Brown , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Greg Kroah-Hartman , Daniel Lezcano , Thomas Gleixner , Anup Patel , Marc Zyngier , Bjorn Helgaas , Robert Moore , Haibo Xu , Andrew Jones , Conor Dooley , Atish Kumar Patra , Sunil V L Subject: [RFC PATCH v1 15/21] ACPI: RISC-V: Create IMSIC platform device Date: Thu, 3 Aug 2023 23:29:10 +0530 Message-Id: <20230803175916.3174453-16-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230803175916.3174453-1-sunilvl@ventanamicro.com> References: <20230803175916.3174453-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The MSI controller functionality of the RISC-V IMSIC is probed as a platform device by the driver. So, create the IMSIC platform device if the IMSIC was discovered in MADT during early IMSIC driver probe. Signed-off-by: Sunil V L --- drivers/acpi/riscv/init.c | 2 ++ drivers/acpi/riscv/init.h | 4 ++++ drivers/acpi/riscv/irqchip.c | 23 +++++++++++++++++++++++ 3 files changed, 29 insertions(+) create mode 100644 drivers/acpi/riscv/init.h diff --git a/drivers/acpi/riscv/init.c b/drivers/acpi/riscv/init.c index b5807bbdb171..be61c08ea385 100644 --- a/drivers/acpi/riscv/init.c +++ b/drivers/acpi/riscv/init.c @@ -6,7 +6,9 @@ */ #include +#include "init.h" void __init acpi_riscv_init(void) { + riscv_acpi_imsic_platform_init(); } diff --git a/drivers/acpi/riscv/init.h b/drivers/acpi/riscv/init.h new file mode 100644 index 000000000000..a2f72bb294d3 --- /dev/null +++ b/drivers/acpi/riscv/init.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#include + +void __init riscv_acpi_imsic_platform_init(void); diff --git a/drivers/acpi/riscv/irqchip.c b/drivers/acpi/riscv/irqchip.c index 6e15d45cb229..ca96bf109cf7 100644 --- a/drivers/acpi/riscv/irqchip.c +++ b/drivers/acpi/riscv/irqchip.c @@ -9,7 +9,10 @@ #include #include #include +#include +#include #include +#include "../../../drivers/pci/pci.h" struct riscv_irqchip_list { struct fwnode_handle *fwnode; @@ -101,3 +104,23 @@ struct fwnode_handle *acpi_riscv_get_msi_fwnode(struct device *dev) { return imsic_acpi_fwnode; } + +void __init riscv_acpi_imsic_platform_init(void) +{ + struct platform_device *pdev; + int ret; + + if (!acpi_riscv_get_msi_fwnode(NULL)) { + pci_no_msi(); + return; + } + + pdev = platform_device_alloc("riscv-imsic", 0); + if (!pdev) + return; + + pdev->dev.fwnode = acpi_riscv_get_msi_fwnode(NULL); + ret = platform_device_add(pdev); + if (ret) + platform_device_put(pdev); +}